# High school math questions and answers

Recent questions in Secondary
sagnuhh 2020-11-06

### The current-density magnitude in a certain circular wire isJ = (2.90 1010A/m4)r^{2}, where r is theradial distance out to the wire's radius of 3.00 mm. The potential applied to the wire (end toend) is 60.0 V. How much energy is converted to thermal energy in1.60 h?

sibuzwaW 2020-11-06

### Match the function with its graph (labeled I-VI). Givereasons a) $f\left(x,y\right)=|x|+|y|$ b) $f\left(x,y\right)=|xy|$ c) $f\left(x,y\right)=1÷1+{x}^{2}+{y}^{2}$ d) $f\left(x,y\right)={\left({x}^{2}-{y}^{2}\right)}^{2}$ e) $f\left(x,y\right)={\left(x-y\right)}^{2}$ f) $f\left(x,y\right)=\mathrm{sin}\left(|x|+|y|\right)$

aortiH 2020-11-06

### A man is riding on a flatcar traveling at a constant speed of 9.10m/s. He wishes to throw a ball through a stationary hoop 4.90mabove the height of his hands in such a manner that the ball willmove horizontally as it passes through the hoop. He throws the ballwith a speed of 10.8 m/s with respect to himself. a)What must the vertical component of the initial velocity of theball be? b) How many seconds after he releases the ball will it pass throughthe hoop? c) At what horizontal distance in front of the hoop must he releasethe ball? d) When the ball leaves the mans

Amari Flowers 2020-11-06

### Bicyclists in the Tour de France do enormous amounts of workduring a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How much work does he do during a 140 km race in which his average speed is 13.0 m/s? (b) Often, the work done is expressed in nutritional Calories Rather than in joules. Express the work done in part (a) in terms of nutritional Calories, noting that 1 joule $=2.389×{10}^{-4}$ nutritional Calories.

vestirme4 2020-11-06

### Determine the convergence or divergence of the series. $\sum _{n=2}^{\mathrm{\infty }}\frac{1}{n\left(\mathrm{ln}n{\right)}^{3}}$

Reeves 2020-11-06

### What does the combined length of any two sides of a triangle exceed?

e1s2kat26 2020-11-06

### Solve the equation: ${9}^{x}-{3}^{x+1}+1=0$

Joni Kenny 2020-11-06

### In $△PQR,m\angle P=46x$ and $m\angle R=7x$, a. Write and solve an equation to find the measure of each angle. b. Classify the triangle based on its angles.

Mylo O'Moore 2020-11-06

### ‘Rewrite the Jofinition “An equilateral triangle has three sides vrite the definihon fv, biconditional.

Kyran Hudson 2020-11-05

### Determine whether each statement makes sense or does not make sense, and explain your reasoning. A system of linear equations in three variables, x, y, and z, cannot contain an equation in the form y = mx + b.

ossidianaZ 2020-11-05

### Given that Domain of the rational function is all real numbers. So the rational function should not contain denominator part.

necessaryh 2020-11-05

### Use the two-way table to create a two-way table that shows the joint and marginal relative frequencies.

Josalynn 2020-11-05

### Consider that algebraic modeling Identify the decay factor, if any, for each function. If there is no decay factor, type N. 1) $y={0.8}^{x}$ 2) $y=-3x-8$ 3) $g\left(x\right)={\left(\frac{1}{2}\right)}^{x}$

SchachtN 2020-11-05

### Express the radical as power. $\left(a\right)\sqrt[6]{{x}^{5}}$ To simplify: The expression $\sqrt[6]{{x}^{5}}$ and express the answer using rational exponents. (b) ${\left(\sqrt{x}\right)}^{9}$ To simplify: The expression ${\left(\sqrt{x}\right)}^{9}$ and express the answer using rational exponents.

alesterp 2020-11-05

### Let P be an approximation of pai accurate to n decimals. Show that gives an approximation correct to 3n decimals. (Hint: Let .)

sanuluy 2020-11-05

### Test the claim that the proportion of people who own cats is significantly different than $50\mathrm{%}$ at the 0.01 significance level. Based on a sample of 300 people, $41\mathrm{%}$ owned cats Hint: Multiply to obtain the number of successes The test statistic is: ? (to 2 decimals) The p-value is: ? (to 4 decimals)

postillan4 2020-11-05